2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

<< BACK TO AGENDA

6/05/2017  |   10:00 AM - 10:15 AM   |  A COMPARISON OF CHANNEL SHADE AND HYPORHEIC EXCHANGE ON SEASONAL PATTERNS OF STREAM TEMPERATURE   |  302B

A COMPARISON OF CHANNEL SHADE AND HYPORHEIC EXCHANGE ON SEASONAL PATTERNS OF STREAM TEMPERATURE

Channel shading and hyporheic exchange both have the potential to damp the amplitude of daily and annual stream temperature cycles, but operate via different mechanisms. Because of these mechanistic differences, subtle to substantial shifts in the timing and magnitude of temperature damping in the stream channel may exist. Therefore, we compared the daily and seasonal effects of channel shading versus hyporheic exchange using a reach-scale model of channel temperature that incorporates atmospheric heat exchange and a hydrologically-accurate representation of the hyporheic zone. In summer, the magnitude of seasonal channel cooling associated with an expansive, coarse-grained hyporheic zone was similar to shading effects. However, the differences between shading and hyporheic exchange effects were most pronounced in the winter when channel warming associated with hyporheic exchange was substantially greater than warming associated with shade. Whereas shade effects are largely limited to summer, hyporheic exchange showed substantial influences on stream temperatures throughout the year. Understanding the differences between how hyporheic exchange and shade influence stream temperature has the potential to guide restoration and management decisions in thermally degraded streams.

  • C16 Restoration Ecology
  • C28 Land-Water Interfaces
  • C14 Hydroecology

Presentation:
This presentation has not yet been uploaded.

Handouts:
Handout is not Available

Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference


Presenters/Authors

Katie Fogg (), Montana State University, s.katie.fogg@gmail.com;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Geoffrey Poole (), Montana State University, Montana Institute on Ecosystems, gpoole@montana.edu ;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Scott O'Daniel (), Umatilla Tribes, scottodaniel@ctuir.org;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Ann Marie Reinhold (), Montana State University, Montana Institute on Ecosystems, reinhold@montana.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -